Polish GraphQL auto-configuration changes

This commit fixes build issues, as the recent changes surfaced an
existing problem: QueryDsl auto-configurations were not guarded by
classpath conditions for QueryDsl Core.

See gh-34974

Author: bclozel

spring-boot-project/spring-boot-autoconfigure/build.gradle

@@ -29,6 +29,7 @@ dependencies {
 	optional("com.nimbusds:oauth2-oidc-sdk")
 	optional("com.oracle.database.jdbc:ojdbc8")
 	optional("com.oracle.database.jdbc:ucp")
+	optional("com.querydsl:querydsl-core")
 	optional("com.samskivert:jmustache")
 	optional("io.lettuce:lettuce-core")
 	optional("io.projectreactor.netty:reactor-netty-http")

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlQuerydslAutoConfiguration.java

@@ -19,6 +19,7 @@
 import java.util.Collections;
 import java.util.List;
 
+import com.querydsl.core.Query;
 import graphql.GraphQL;
 
 import org.springframework.beans.factory.ObjectProvider;
@@ -46,7 +47,7 @@
  * @see QuerydslDataFetcher#autoRegistrationConfigurer(List, List)
  */
 @AutoConfiguration(after = GraphQlAutoConfiguration.class)
-@ConditionalOnClass({ GraphQL.class, QuerydslDataFetcher.class, QuerydslPredicateExecutor.class })
+@ConditionalOnClass({ GraphQL.class, Query.class, QuerydslDataFetcher.class, QuerydslPredicateExecutor.class })
 @ConditionalOnBean(GraphQlSource.class)
 public class GraphQlQuerydslAutoConfiguration {
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlReactiveQuerydslAutoConfiguration.java

@@ -19,6 +19,7 @@
 import java.util.Collections;
 import java.util.List;
 
+import com.querydsl.core.Query;
 import graphql.GraphQL;
 
 import org.springframework.beans.factory.ObjectProvider;
@@ -46,7 +47,7 @@
  * @see QuerydslDataFetcher#autoRegistrationConfigurer(List, List)
  */
 @AutoConfiguration(after = GraphQlAutoConfiguration.class)
-@ConditionalOnClass({ GraphQL.class, QuerydslDataFetcher.class, ReactiveQuerydslPredicateExecutor.class })
+@ConditionalOnClass({ GraphQL.class, Query.class, QuerydslDataFetcher.class, ReactiveQuerydslPredicateExecutor.class })
 @ConditionalOnBean(GraphQlSource.class)
 public class GraphQlReactiveQuerydslAutoConfiguration {